scholarly journals Estimation of Carbon Emission Reductions by Managing Dry Mixed Deciduous Forest: Case Study in Popa Mountain Park

2014 ◽  
Vol 05 (02) ◽  
pp. 80-93 ◽  
Author(s):  
Yu Ya Aye ◽  
Savent Pampasit ◽  
Chanin Umponstira ◽  
Kanita Thanacharoenchanaphas ◽  
Nophea Sasaki
Keyword(s):  
Carbon Emission ◽  
Deciduous Forest ◽  
Emission Reductions ◽  
Mixed Deciduous Forest

scholarly journals Architectural analyses of tree forking habit with single-image photogrammetry: a case study of post-mature temperate oaks

2019 ◽  
Author(s):  
Kamil Kędra
Keyword(s):  
Deciduous Forest ◽  
Branching Ratio ◽  
Tree Level ◽  
Single Image ◽  
New Classification ◽  
Mature Trees ◽  
Forest Remnant ◽  
Mixed Deciduous Forest

AbstractTree forking is both ecologically and economically relevant, but remains much understudied. Here, thirty post-mature temperate oaks (Quercus robur or Q. petraea) forking habit was both qualitatively and quantitatively analysed with the single-image photogrammetry (SIP), in a north-exposed mixed, deciduous forest remnant (near Krakow; Poland). A new classification of mature oak architectures was proposed, based on the original Hallé-Oldeman model, with modified locations of the main branches and presence or absence of bifurcation in the main stem. Two of the new classes were most clearly represented by the studied oaks. It was found that the trees tended to either keep branches at varying heights, with no forks, or to iterate forking, with no major (non-fork) branches below the first fork. The quantitative analysis confirmed the applicability of the branch to parent stem diameter ratio to define a fork. Branching ratio was positively correlated with both tree diameter and height of a branch above the ground, which is consistent with a previous study, based on much younger trees. It is concluded, that most probably the tree-level factors and phenomena, such as water supplies and posture control, played the key role in the studied oaks forking habit. The SIP method enabled valuable insights into the large oaks’ forking, both at the tree and branch levels, and may be further employed to study mature trees’ bifurcation patterns. Based on this study, some possible improvements to the methodology were discussed.

Scaling leaf photosynthesis to canopy in a mixed deciduous forest. I. model description

1997 ◽  
Vol 62 ◽  
Author(s):  
R. Samson ◽  
S. Follens ◽  
R. Lemeur
Keyword(s):  
Temperature Dependence ◽  
Quercus Robur ◽  
Deciduous Forest ◽  
Growing Season ◽  
Model Description ◽  
Canopy Photosynthesis ◽  
Leaf Photosynthesis ◽  
Layer Model ◽  
Mixed Deciduous Forest ◽  
Leaf Level

A  multi-layer model (FORUG) was developed, to simulate the canopy  photosynthesis of a mixed deciduous forest during the growing season.  Measured photosynthesis parameters, for beech (Fagus  sylvatica), oak (Quercus  robur) and ash (Fraxinus  excelsior), were used as input to the model. This  information at the leaf level is then scaled up to the level of the canopy,  taking into account the radiation profiles (diffuse and direct PAR) in the  canopy, the vertical LAI distribution, the evolution of the LAI and the  photosynthesis parameters during the growing season, and the temperature  dependence of the latter parameters.

scholarly journals Sudden Phytophthora Dieback of Wild Cherry Trees in Northwest Hungary

2016 ◽  
Vol 12 (2) ◽  
pp. 117-124
Author(s):  
Judit Sárándi-Kovács ◽  
László Nagy ◽  
Ferenc Lakatos ◽  
György Sipos
Keyword(s):  
Prunus Avium ◽  
Deciduous Forest ◽  
Flood Plain ◽  
Phytophthora Species ◽  
Soil Conditions ◽  
Wild Cherry ◽  
Plain Area ◽  
Phytophthora Spp ◽  
Mixed Deciduous Forest ◽  
Cherry Trees

Abstract During a regular survey of declining forests in 2011, sudden dieback symptoms were observed on scattered wild cherry trees (Prunus avium) in a mixed deciduous forest stand, located in the flood plain area of the Rába River, in northwest Hungary. In this study, we correlated both soil conditions and presence of Phytophthora spp. to dieback of cherry trees. Two Phytophthora species, P. polonica and P. plurivora, were isolated from the rhizosphere soil of the dying trees. By contrast, only P. polonica was recovered from the necrotic tissues of symptomatic roots. Stem and root inoculation tests on cherry seedlings showed pathogenicity of both species, although P. polonica proved to be more virulent. This is the first report of natural infections of P. polonica.

scholarly journals Sylvicultural Treatment of Tropical Mixed Deciduous Forest

Nature ◽  
1950 ◽  
Vol 165 (4184) ◽  
pp. 23-24
Author(s):  
E. P. STEBBING
Keyword(s):  
Deciduous Forest ◽  
Mixed Deciduous Forest
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